--- opennebula-4.4.0/src/vnm_mad/remotes/802.1Q/HostManaged.rb	2013-11-27 17:43:24.000000000 +0100
+++ opennebula-4.4.0.mod/src/vnm_mad/remotes/802.1Q/HostManaged.rb	2013-12-12 22:16:53.597867982 +0100
@@ -43,19 +43,24 @@
                     vlan = CONF[:start_vlan] + nic[:network_id].to_i
                 end
 
+		# Only, if bridge does not exist, create and add the
+		# underlying VLAN interfaces
+		# Prevents possible loops in case the bridge is existing
+		# (assumed, that the bridge is correctly working)
                 if !bridge_exists? bridge
                     create_bridge bridge
                     ifup bridge
+                    # create new VLAN interface if it does not exist
+                    if !device_exists?(dev, vlan)
+                        create_dev_vlan(dev, vlan)
+                        ifup(dev, vlan)
+                    end
+		    # and attach VLAN interface to the bridge
+                    if !attached_bridge_dev?(bridge, dev, vlan)
+                        attach_brigde_dev(bridge, dev, vlan)
+                    end
                 end
 
-                if !device_exists?(dev, vlan)
-                    create_dev_vlan(dev, vlan)
-                    ifup(dev, vlan)
-                end
-
-                if !attached_bridge_dev?(bridge, dev, vlan)
-                    attach_brigde_dev(bridge, dev, vlan)
-                end
             end
         end